Add sdk build (#17335)

## Summary

Adds `app:build` command as a one-shot version of `app:dev` - builds
manifest, functions, and front components once then exits (no watching).

**Changes:**
- Added `watch` option to `FunctionsWatcher` and
`FrontComponentsWatcher` to support both watch and one-shot modes
- Created `AppBuildCommand` reusing the same build logic as `app:dev`
with `watch: false`
- Added integration tests for `app:build` on both `rich-app` and
`root-app`
- Updated manifest types: `handlerPath` → `sourceHandlerPath` +
`builtHandlerPath`, `componentPath` → `sourceComponentPath` +
`builtComponentPath`
- Updated test app `package.json` scripts to match `create-twenty-app`
template

packages/twenty-shared/src/application/frontComponentManifestType.ts

@@ -2,6 +2,7 @@ export type FrontComponentManifest = {
   universalIdentifier: string;
   name?: string;
   description?: string;
-  componentPath: string;
+  sourceComponentPath: string;
+  builtComponentPath: string;
   componentName: string;
 };

packages/twenty-shared/src/application/serverlessFunctionManifestType.ts

@@ -24,8 +24,8 @@ export type ServerlessFunctionManifest = SyncableEntityOptions & {
   description?: string;
   timeoutSeconds?: number;
   triggers: ServerlessFunctionTriggerManifest[];
-  handlerPath: string;
-  builtHandlerPath?: string; // Should be required when build mode implemented
+  sourceHandlerPath: string;
+  builtHandlerPath: string;
   handlerName: string;
   toolInputSchema?: InputJsonSchema;
   isTool?: boolean;